<template>
  <div class="app-container">
    <h2 style="text-align: center">发布新课程</h2>
    <el-steps
      :active="3"
      process-status="wait"
      align-center
      style="margin-bottom: 40px;"
    >
      <el-step title="填写课程基本信息"/>
      <el-step title="创建课程大纲"/>
      <el-step title="最终发布"/>
    </el-steps>
    <div class="ccInfo">
      <img :src="publishCourse.cover"/>
      <div class="main">
        <h2>{{ publishCourse.title }}</h2>
        <p class="gray">
          <span>共{{ publishCourse.lessonNum }}课时</span>
        </p>
        <p>
          <span>
            所属分类：{{ publishCourse.subjectLevelOne }} — {{ publishCourse.subjectLevelTwo }}
          </span>
        </p>
        <p>课程讲师：{{ publishCourse.teacherName }}</p>
        <h3 class="red">{{ publishCourse.price }}</h3>
      </div>
    </div>

    <el-form label-width="120px">
      <el-form-item>
        <el-button @click="previous">返回修改</el-button>
        <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">
          发布课程
        </el-button>
      </el-form-item>
    </el-form>
  </div>
</template>

<script>
import course from "@/api/edu/course"

export default {
  name: "课程发布",
  data() {
    return {
      saveBtnDisabled: false,  // 保存按钮是否禁用
      courseId: '',
      publishCourse: {}
    };
  },
  created() {
    // 获取路由课程id值
    if (this.$route.params && this.$route.params.id) {
      this.courseId = this.$route.params.id
      // 调用接口方法根据课程id查询
      this.getCoursePublishId()
    }
  },
  methods: {
    // 根据课程id查询课程信息
    getCoursePublishId() {
      course.getPublishCourseInfo(this.courseId)
        .then(response => {
          this.publishCourse = response.data.publishCourse
        })
    },
    //跳转到上一步
    previous() {
      this.$router.push({path: "/course/chapter/1"});
    },
    publish() {
      // 调用接口
      // course.coursePublish(this.courseId)
      //   .then(response => {
      //     // 提示
      //     this.$message({
      //       type: 'success',
      //       message: '课程发布成功!'
      //     })
      //     // 跳转课程列表页面
      //     this.$router.push({path: "/course/list"});
      //   })
      this.$confirm('确定要发布此课程吗？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(() => {
        course.coursePublish(this.courseId)
          .then(response => {
            this.$message({
              type: 'success',
              message: '课程发布成功'
            })
            // 跳转课程列表页面
            this.$router.push({path: "/course/list"});
          })
      })
    }
  }
}
</script>

<style scoped>
.ccInfo {
  background: #f5f5f5;
  padding: 20px;
  overflow: hidden;
  border: 1px dashed #ddd;
  margin-bottom: 40px;
  position: relative;
}

.ccInfo img {
  background: #d6d6d6;
  width: 500px;
  height: 278px;
  display: block;
  float: left;
  border: none;
}

.ccInfo .main {
  margin-left: 520px;
}

.ccInfo .main h2 {
  font-size: 28px;
  margin-bottom: 30px;
  line-height: 1;
  font-weight: normal;
}

.ccInfo .main p {
  margin-bottom: 10px;
  word-wrap: break-word;
  line-height: 24px;
  max-height: 48px;
  overflow: hidden;
}

.ccInfo .main p {
  margin-bottom: 10px;
  word-wrap: break-word;
  line-height: 24px;
  max-height: 48px;
  overflow: hidden;
}

.ccInfo .main h3 {
  left: 540px;
  bottom: 20px;
  line-height: 1;
  font-size: 28px;
  color: #d32f24;
  font-weight: normal;
  position: absolute;
}
</style>
